Discusses significance of Col. Napier's pendulum observations to research on earth's constitution and gravitation.
Discusses significance of Col. Napier's pendulum observations to research on earth's constitution and gravitation.
Thanks for many works, especially double star catalogs, about which JH requests further information, and which will help JH's attempt to compile digest of all measures of all known double stars.
Thanks for telegram and has dispatched papers about absorption power of actinometer liquid. Hopes letter written in Lady Sabine's handwriting does not indicate serious illness of ES.
Is preparing a catalogue of all double star observations, and is having much difficulty with the observations of J. H. Mädler.
Thanking him for copies of books. People at Collingwood are gazing at the eclipse. Concerning the astatic needle.
Thanking him for his paper on heat developed in combination of acids and bases. Commenting on the various makes of calorimeters.
Regarding patents, and quoting the results of experiments by foreigners without acknowledging the sources.
Thanks TA for information on ice calorimetric work.
Thanks TA for further information [see JH's 1871-2-22] on TA's work on ice calorimeter.
Is distressed to hear that [W. L.] Newman's tables cannot be found at the R.A.S. Please make a further search. Does the R.A.S. have C. J. G. [=J. W.] Pastorff's volume of drawings of sunspots?
Relationship of electricity to magnetism, and relevance to 'auroral streamers'.
Thanks for, and comments on, some photographs of the solar corona.
Thanks for his pamphlet on 'Trade Unions and the Cost of Labour.' Comments on this.
Reply to FC's 1870-2-8.
Advice and guidance on the path he is to pursue when he goes to university.
Of talking fishes, a great meteor falling in Tripoli, and the 'madness of man' in the wake of the Franco-Prussian War.
Comments about some pieces of German poetry.
Recounts various reports of phenomena in the sky related to the 'great Moscow phenomenon' of 'mock Suns and inverted Arches.'
Thanks for the clippings about an aurora; thoughts on the relationship of poetry to music.
Thanks for the volume of EC's verse; comments on various aspects of poetry.